Device for disintegrating and conveying materials



April 1, 1930. A. FARNER 1,752,902

DEVICE FOR DISINTEGRATING AND CONVEYING MATERIALS Filed Aug. 15, 192'? :llllljnllll www i i dit;

vided, the rod Patented Apr. 1 1930 UNITED 4STATI-:s

PATENT OFFICE AUGUST raaNEza, or xUsNacHT-znmcrr, SWITZERLAND' l DnvIcn ron. :D IsrNTEGnaTING AND CONVEYING MATERIALS Application led August Il i, 1927. Serial No. 213,026.

ing device forming the subject matter of the 10 present invention 1s provided with a blower having a grid surrounding the rotor and inserted in the'side walls`of the blower, and

against whichthe material to be disintegrated is projected and Vwhich is provided l5 with passages for the treated material.

Two constructional examples of the subject matter oflthe present invention are illustrated on the accompanying drawings, in which Fig.' 1 shows in eleva-tion with parts indicated Ain section a-first constructional'examp ei Fig. 2 is a vertical section taken at-right an les .to Fig. 1, 25 3 ig. 3 is a vertical section similar to that of Fig. 2 ofa second constructional example.

In the, drawings 1 denotes theblower casing madeiof several'parts and provided with two branches 2 to be connected to the suction 3 conduit and a branch 3 to be connected to the discharge conduit. Within the casing 1 and on the shaft 4 the rotor `5 is mounted provided with rigid blades. lSurrounding the rotor an anvil pid formed of rods 6 is pros eing arranged at a distance from eachv other inthe two side walls of the casing 1 so that passages 7 are formed between the rods 6. The latter are inserted f from outsidethro'ugh holes provided in one o side wall of the casing 1 and enter recesses provided. in the other side wall offthe casing 1. The rods 6 project somewhat beyond the walls of the casing through which they pass and are secured in osition by a ring 8, which may be compose of single segments,

screwed to that wall and covering the projecting ends.

Opposite to the discharge branch 3 and tanential to the rotor 5 a channel 9 is arranged 1n the blower casing 1 and. a (pipe 10 pro- 50 vided withV a cock 11 is connecte to the channel 9. The pipe 10 branches off a main conduit 12, from which two further branch pipes 13,'each provided with a cock 14, lead to the' two suction branches-2. 5 The material to be disintegrated is sucked by the action of the rotor 5 through the branches 2 into the casing 1 and is projected against the rods 6 of the grid whereby it is disintegrated and is then forced through the passages 7 of the grid and conveyed further through the discharge branch 3. The conveying of the disintegrated material may also be assisted by' openingthe cock 11 of the pipe 10 and Vleading thereby an auxiliary stream 65 of air under pressure into the channel 9 which 'stream causes a suction action on the grid. Furthermore the pressure acting inside the casing 1 on the materialen account of the rotation of the rotor may be increased by opening the cocks 14 of the pipes 13 and leading an auxiliary stream of air for conveying;l purposes through the branches 2 into the casing 1.

In this manner a regulation of thesuction and pressure action inside the blower casing 1 is possible. Carelhas to be taken that the pressure present in the casing 1 of the blower does not cause abanking up of the material in Vthe suction branches 2 Iand that dust gener- 8 ated by the disintegration of the material is n ot driven out into the room in which the de vice is placed or into the surrounding atmosphere. Obviously the power consumption of the rotor of the blower is the smaller the higher the vacuum lis in hich the rotor runs; if the conveying of the material disintegrated to dust is mainly-caused by the action of the auxiliary stream from the channel 9 a'high degree of nenelss of this dust may be obtained 9 yso without causing a considerable increasein the power consumed by the rotor, whilst wlth all the known disintegrating devices a hlgher degree of fineness of the treated material causes a power consumption which rises much quicker than the degree of ineness.

By varying the number of rods 6 forming the grid or by inserting rods of a smaller diameter, which may be carried out without dismantling the whole blower but simply by removing the ring 8, the width of the passages for the'material in the grid may be altered to suit any desired degree of iineness of the disintegration.

The constructional example illustrated in Fig. 3 diii'ers from that explained above inasmuch as the channel 9 is not arranged in a tangential manner to the grid but transversely to the casing 1. Opposite the channel 9 an auxiliary channel 15 is provided and directed radially from the periphery of the casing 1 towards the centre of the latter. With this constructional example by means of the auxiliary conveying stream material, which owing to its coarse grain does not leave the disintegrator through the discharge branch 3 but collects in the casing, is brought back into the rotor 5 by the auxiliary channel 15 and is again projected against the grid by the rotor. Atmospheric air or heated air or any other gas may be used for the conveying stream and for the auxiliary conveying stream.

I claim:

1. Adevice for disintegrating and conveying materials, comprising a blower havin a casing provided with a delivery branch, la an rotor in the casing whose blades are formed as crushing members, an anvil grid of separately removable bars surrounding the rotor, y

veying material, a blower having a casing i and a rotor, a delivery branch and a suction branch ont'said casing, an anvil between the casing and rotor, said rotor having fan arms co-operating with said anvil to comminute material and means to return material that has passed said anvil into comminuting space between anvil and rotor by the pressure of the air produced by said rotor. i

3.. In a device for disintegrating and conveying material, a blower having a casing provided with a suction and la delivery branch, a rotor in the casing comprising a series of hammer arms constructed as fan blades, an anvil grid between said arms and casing and means to conduct material that has passed through said grid to the casing near its center by the air compressed by said blades.

4, In a device for disintegrating and conveymg mater1a1,a blower havinga casing 

